Heney mahnlven



(No Model.)

H. MAHNKEN.

PRINTING TELEGRAPH RECEIVER.

No. 367,720. Patented Aug, 2, 1887.

N. Pnkfis. 'Phoimbmo npher. Washington, no.

UNITED STATES PATENT OFFICE.

HENRY MAHNKEN, OF BROOKLYN, ASSIGNOR TO THE COMMERGTAL TELE- GRAMCOMPANY, OF NEW YORK, N. Y.

PRINTING-TELEGRAPH. RECEIVER.

SPECIFICATION forming part. of Letters Patent No. 367,720, dated August2, 1887.

Application filed Novembe1-6JS86. Serial No. 218,127. (No model.)

To all whom it may concern.-

Be it known that 1, HENRY MAIINKE'N, of Zrooklyn, in the county of Kingsand State of New York, have invented a certain new and usefulImprovementin Printirig-Telegraph Pueceivers, of which the following isa specification.

My invention relates to that class of printing-telegraph receiversemploying two typewhcels and printing two lines upon the tape, whereinsuch type-wheels are rotated inde pendently by separate powerconnections, and are controlled in their movement by an an chorescapcment lever working upon two escapewhecls-onc for each of saidtype-wheelsstops being provided for holding either typewheel at restwhile the other rotates.

The object I have in view is to so organize a printingtclegraph machineof this specific character that the type-wheels will be arranged outsideof the frame carrying the power-trai ns.

' This I accomplish by mounting one ofthe typewheels upon a sleevesurroulnling the shaft which carries the other type-wheel. \Vith thisdevice, if the sleeve has bearings on the shaft it surrounds, thefriction of one on the other while under the strain of the powentrainwill prevent the machine from being practically operative. Thisdetrimental action affects the shaft principally or entirely. Vhen theshaft revolves and the sleeve is stationary, the shaft is subjected tothe great friction caused by the strain of the power-traiu 011 thesleeve. On the other hand, when the shaft is stationary and the sleeverevolves, the strain of the powertrain on the shaft is taken by theshaft-bearings and the sleeve is free to revolve. A further object is toovercome this difficulty,which I do by giving the sleeve and shaftseparate bearings, so that one will not bear on the other.

In the accompanying drawings, forming a part hereof, Figure 1 is acentral vertical sec tion of the machine with parts in elevation, andFig. 2 a side view of the type-wheel magnets and the anchor-escapement.

A A are the side plates of the :frame, which carry the parts of themachine.

B G are the figure and letter typc-wheels, which are arranged side byside outside of the frame of the machine and between the side plate, A,and a bracket, a, secured thereto.

These wheels are mounted one upon a shaft, D, and the other upon asleeve, E, surrounding such shaft. The sleeve and shaft D E passentirely through both of the side plates, A A,

ssf

the shaft D beingjournaled at one end in the bracket 0, before referredto, and at its other end in a bracket, 1), secured to the side plate, A.The sleeve E is journalcd directly in the side plates, A A, or inbearing-plates c d, secured to such side plates, as shown. The sleeve Eis supported entirely by its own outside bearings and does not bear uponthe shaft D, and hence the shaft is free to revolve without bein gsubjected to friction caused by the straip of the power-train on thesleeve.

The shaft D is provided with a pinion, 0, while the sleeve E has apinion, f. These pinions are connected with separate trains of gearing,(not shown,) operated independently by the same or by different weights,as is well understood in this class of machines. On the ends. of theshaft and sleeve, outside of the side plate, A, and between such plateand the bracket b, are secured two escape-wheels, F G. These areoperated by two anchor-escapemcnt levers, H H, secured side by siderigidly to a rock-shaft, h, jourualed in both side plates, A A. Thelevers H H work together as one upon both escapewheels, and may bereplaced by an equivalent construction well known in the art-17. 0.,asingle leverhaving pallets wide enough to engage the teeth of bothescapewheels at the same time. The rock-shaft It, carries the armatureI, which is vibrated by the typewhcel magnets K.

The escape wheels F G have pins '5 7.:, which are engaged alternately bystop-arms l m on the unison rock-shaft n. This shaft is rocked one wayto stop the figure-wheel and release the letter-wheel, and in the otherdirection to stop the letter-wheel and release the figure-wheel. Themeans for operating this unison rock-shaft, as well as the printing,inking, and tapefeeding device and the powertrains, are omitted from thedrawings for simplicity and because such parts are well under stood.

. The operation of the parts of the machine to which myinventiou extendsis as follows: Suppose the figure-whecl B is to be printed from. Theunison rock-shaft will be shifted in the direction to intercept the pinit on the escape- WheelG by the arm in. The sleeve Eand the letter-wheelC will thus be held stationary at the unison-point against the strainofthe powertrain, while the shaft D and the figure-wheel are free torevolve. A rapidly-alternating current being passed through thetype-wheel magnets K, the armature I will be vibrated,

and this, through the rock-shaft It, will vileasing the wheel G andlocking the wheel F.

The letterwheel C may then be rotated, as before explained with respectto the figurewheel. The unisonpoint on each type-wheel, as will beunderstood, is a blank space or a dot, so that no confusing character isprinted by the wheel held at unison. What I claim is I 1. In aprinting-telegraph receiver, the combination, with twoindependently-revolvr ifig type-wheels arranged side by side, of a shaftcarrying one of such wheels, a sleeve su r rounding the shaft andcarrying the other of such wheels, and independent bearings, for suchshaft and sleeve,substantiall y as set forth. 2. The combination,substantially as de scribed, of two independcntly-rotating typewhecls,onesccured to a shaft and the other to a sleeve around said shaft,independent bearings for such shaft and sleeve, escapementwheels for theshaft and sleeve, and an escapement-lever common to both said cscapc-wheels.

3. The combination, substantially as described, of two type-wheelssecured, respectively, to a shaft and to a sleeve surrounding saidshaft, independent bearings for such shaft and sleeve, independentdriving mechanism for said shaft and sleeve, separate escapementwheels,one secured to the shaft and the other to the sleeve, escapement devicesfor said esl capement-whecls, and an armature common to the said wheelsfor operating the escapeinent devices.

4. The combination, substantially as described, of two type-wheels,independently rotatable and secured, respectively, to a shaft and to asleeve through'which the shaft passes, independent beari ngs forsuchshaft and sleeve, an escapement-wheel for each type-wheel, stops forholding either typewhcel at rest while the other rotates, and ananchor-escape ment device vibrating and engaging with both escape-wheelswhen one is held stationary to permit the independent rotation of theother.

5. The combination of a shaft carrying one type-wheel and provided witha gear-wheel or pinion through which it may be driven, a sleevesurrounding the shaft carrying another type-wheel, and also providedwith a wheelor pinion, independent bearings for such shaft and sleeve,and escapement-wheels secured, respectivcl y, to the shaft and sleeveand placed in juxtaposition, substantially as set forth.

6. The combination of a shaft mounted at one end in a bracket outsidethe frame, a typewheel secured to said shaft, a sleeve surround ing saidshaft, carrying a second type-wheel arranged beside the first andbetween the bracket and frame, a Wheel or pinion on the sleeve, aseparate wheel or pinion on the shaft, independent bearings for suchshaft and sleeve, an anchor escapement wheel on the sleeve, ananchor-escapemcnt wheel on the shaft, and anchor-escapement devices forsaid wheels, having acommon actuating mechanism.

7. The combination, substantially as described, of two type-wheelssecured, respectively, to a shaft and to a sleeve surrounding saidshaft, independent bearings for such shaft and sleeve, independentdriving'motors for said shaft and sleeve, stops for holding eithertype-wheel at rest while the other rotates, and an anchonescapemcntcommon to both wheels.

This specification signed and witnessed this 4th day of November, 1886.

HENRY M AHNK EN.

Vitnesses:

M. PELZER, H. N. Pownns.

